Firearm



Aug. 23, 1938 Q HQRSRUD 2,127,919

' FIREARM Filed March so, 1936 s Sheets-Sheet 2 o. HORSRUD FIREARM FiledMarch 30, 1936 3 Sheets-Sheet 3 "llllllillll Patented Aug. 23, 1938UETED STATES FIREARM Ole Horsrud, Chicago, 111., assignor to Sears.Roebuck and 00., Chicago, 111., a. corporation of New York ApplicationMarch 30,

12 Claims.

This invention relates to firearms and more particularly to the breechmechanism and associated parts in a firearm of the over-under type.

Among the objects of this invention is to provide improved cockingmechanism in a firearm of the over-under type. By over-under type ismeant firearms having two barrels and in which one barrel is placedvertically over the other.

Another object is to provide an efiicient and economical manner ofautomatically cocking the firearm through the breaking action.

. A further object is the provision of improved fore-end constructionand novel means for clamping the fore-end onto the barrel portion of thefirearm.

A Still further object is to provide novel cocking mechanism in whichthe fulcrum of the cocking lever is below the bottom line of the firearmproper.

Another object is the provision of improved firing mechanism.

Other objects, advantages and capabilities will later more fully appear.

My invention further resides in the combination, construction andarrangement of parts illustrated in the accompanying drawings, and whileI have shown therein for illustrative purposes a preferred. embodiment,I wish it understood that the same is susceptible of modification andchange without departing from the spirit of my invention.

In the drawings: Fig. l is a side elevation of the breech mech anism andthe rear portions of the barrels and associated parts of a firearmembodying my invention.

Fig.- 2 is a vertical longitudinal sectional view through the partsshown in Fig. 1.

Fig. 3 is a fragmentary vertical longitudinal sectional view of parts ofthe breech mechanism, and rear portions of the barrels and associatedparts and showing the barrels moved to broken position.

Fig. 4 is a view similar to Fig. 3 (some of the parts of Fig. 3 beingomitted) but showing a side elevation.

Fig. 5 is a perspective view of the fore-end.

Fig. 6 is a fragmentary perspective view showing the barrel inlockedposition ready for firing.

Fig. 7 is an end elevation of the fore-end looking at the right-hand endof Fig. 5.

Fig. 8 is a vertical transverse section taken on the line 8-8 of Fig. 2.

Fig. 9 is a transverse horizontal section taken on the line 9-9 of Fig.2.

1936, Serial No. 71.590

Fig. 10 is a transverse vertical section taken on the line 10-10, ofFig. 2.

Fig. 11 is a transverse vertical section taken on the line 11--11 ofFig. 2.

Fig. 12 is a transverse horizontal section taken on the line 12-,-l2 ofFig. 2.

Referring in detail to the drawings, the firearm of the presentinvention comprises generally the breech I, the shell chamber block 2and the barrels consisting of the upper barrel 3 and the lower barrel 4.The firearm of the present invention has the barrels arranged one overthe other, commonly called the over-under type. The fore-end 5 is shownin perspective in Fig. 5 detached from the firearm, and comprisesv theelongated bar 6, the resilient locking ears 1 for detachably holding thefront end engaged with the lower barrel, and the head 8 at the rear endformed with the arcuate depression 9 for fitting the contour of thelower face of the lower barrel, and the arcuate recesses 10-10 formed oneach side in the rear face to receive the cylindrically curved extension11 formed concentric with the pivot pin 12, about which, latter thebarrels swing in breaking the firearm. Pivot pin 12 is mounted in thelower portion of the front end of the frame 13, which frame comprisestwo side plates 14 and 15 spaced apart a distance to snugly but freelyreceive therebetween the shell chamber block 2, which moves swinginglyup and down therein during the breaking and closing of the firearm. Theshell chamber block 2 has two downwardly extending lugs 15 and 11, eachof which has a central groove 18 and 19 in its lower face to straddlethe cocking pin 20, which is longitudinally slidably mounted in saidgrooves 18 and 19 and in suitable grooves and openings in plate 21,which is secured between side plates 14. and 15 of the frame at thebottom thereof. The bottom plate 21 is provided with a depend- 4O ingportion which is preferably merged into and forms part of the triggerguard 105, said depending portion having a recess 82 therein whichextends below the plane of said bottom plate.

The front faces of lug 16 are formed with a substantiallysemi-cylindrical recess to receive the pivot pin 12. In other words, thelug 16 is hooked over the rear side of the pivot pin prior to theapplication to its position of the fore-end 5. Thefore-endis then placedin position with arcuate recesses 10 fitting over arcuate projections11, which thus holds the foreendin position against the barrel and thebarrels swingably related to the pivot pin 12, it being understood thatin applying the fore-end the locking ears 1 are snapped into holdingengagement with the lower barrel by swinging upwardly on the front endof the fore-end and applying sufficient pressure thereto to snap saidresilient locking ears 1 into place.

Pivotally mounted in head 8 of fore-end 5 on pins 22, 23 in grooves 24,25 are two extractor operating levers 26, 21, which at their upper endsengage the forward ends of the two extractor pins 28, 29, which areslidably mounted in the shell chamber block, one on each side, and carrythe extractor 30 at their rear end. The extractor is operated by meansof the lower end 3| of each of levers 26 and 21 ridingin grooves 32formed one in each of the two (one on each side) arcuate extensionsThese grooves 32 are so shaped that as the firearm is being broken thelower ends 3| of levers 26, 21 ride in these grooves and cause theselevers to so rotate on their pivot pins as to move their upper endstoward the rear of the firearm and thus move the two extractor pins 28,29 and the extractor carried thereby rearwardly to extracting position.When new shells are inserted and the firearm closed the rear end of theshells during the closing movement of the firearms will slide downwardlyagainst the adjacent face 32 of the breech block 33 (see Fig. 2), andthus push the shells and the extractor to closed position and return theextractor pins and extractor operating levers to the position shown inFig. l, and ready to again extract the shells when the firearm is againbroken.

The fore-end 5 has positioned in a slot 34 in its head 8 a cocking cam35, which is held in position in said slot by a pin 36. This cam has itsrear face inclined as at 31 to form a cam surface to push rearwardly onthe adjacent end I of the cooking pin 20 to force this pin rearwardlywhen the firearm is being broken (see Fig. 3). The breech block 33 isformed with the upper and lower tangs 38 and 39, respectively, which attheir rear ends are secured together in spaced relation by a machinescrew 48 (see Figs. 1 and 2). Fixed in proper position between the twotangs by screws, bolts, welding or other desired manner, is the framemember 4| in which are slidably mounted the rear portions of the twofiring pins 42 and 43, the forward ends of these pins being slidablymounted in openings 44 and 45 in breech block 33, the front end of eachof these firing pins being reduced in diameter to.

pass through a reduced opening to facilitate firing the shells in theshell chamber.

Firing pin 42 has fixed thereto lug 46, and firing pin 43 has fixedthereto lug 41. Between lugs 46 and 41 and frame 4| are coil compressionsprings 48 and 49, respectively, which by exerting a pressure againstsaid lugs urge the firing pins 42 and 43 forwardly except when held inretracted position by sears 50 and 5|, respectively, which arerespectively pivoted at 52 and 53 in frame member 4|. Sears 50 and 5|are formed at their rear ends with detent portions 54 and 55, which areurged into engagement with notches 56 and 51, respectively, in thefiring pins, by the respective springs 58 and 59. These springs may haveany suitable arrangement desired, the main end being to normally urgethe sear detents into engagement with the firing pin notches and holdthem there until released by the triggers 6D and BI, both mounted on pin62 passing through the trigger slots in the lower tang. Triggers 80 and6| have formed in their upper face rounded notches 63 and 64, in whichsafety device which is operated by the thumb or finger pushingrearwardly on the sliding safety block 61 to set the safety device, orforwardly to release it. Depending from the sliding block or thumb piece61 and slidable in slot 68 in the upper tang is the lug 69, whichcarries pin 19 which seats in notch 1| in the top of lever 12 pivoted at13 to an extension 14 fixed to frame 4|. Fixed to the bottom end oflever 12 is a forwardly extending arm 15, in. which is fixed (orrotatably mounted as desired) a pin 16, which when the thumb piece 61 ismoved rearwardly will move forwardly into position just over the rearends 11 and 18 of the triggers and 6| and prevent upward movement ofsaid rear ends when the triggers are pulled, and in turn make itimpossible to free the sears from the firing pins and in turn preventthe firing of the firearm. When the thumb piece 61 is pushed forwardlythis rotates the lever 12 in a direction to carry the laterallyextending pin 16 rearwardly away from over the rear ends of the triggersand permit the normal firing of the firearm.

Fixed to the under face of the upper tang by screw 19 is a spring 86which at its forward end has a notch 8| into which the pin 10 of thethumb piece 61 will move and be held when the safety is set. When thesafety is not set the pin 10 will be forward of said notch 8| and heldby a projection on the forward end of spring 80 to prevent pin 19 frommoving too easily into notch 8| but permitting such movement underpressure sufficient to overcome the resistance of the spring.

The cocking of the firearm is automatically efiected by breaking it asfollows: Pivotally mounted near the bottom of recess 82 at 83 is anupstanding arm or cocking lever 84, Which near its upper end has anopening 85 through which freely passes firing pin 43, but which 'openingis narrower than the width of lug 41 on firing pin 43. When the firearmis broken the swinging of the barrel portion about the pivot pin l2 willcause the cocking cam 35 to push rearwardly on the cooking pin, the rearend of which will push rearwardly on cocking lever 84, which in turnwill contact with each of lugs 46 and 41 and push them rearwardly, whichwill carry each of the firing pins 42 and 43 rearwardly until the searssnap into locking engagement with the notches in the rear end portionsof the firing pins, thus cocking the firearm through the breakingaction.

It is important to note that the fulcrum 83 of cocking pin 84 is belowthe bottom line of the firearm proper. In other words, it issufiiciently below the cocking pin or push rod 20 to give the desiredmechanical movement to the cocking lever when the latter is being pushedby the cocking pin, to simultaneously retract both of the verticallyspaced firing pins, and at the same time permit the cooking pin andmeans for operating the same, to be located near the bottom of thatportion of the firearm in which it is mounted.

While I have shown the cocking lever as mounted in a recess in thetrigger guard, it does not necessarily have to be specifically somounted but may be mounted in any other desired manner that will bringthe fulcrum of the cocking lever below the horizontal line of thecocking pin.

The showing in the drawings is to be regarded as for illustrativepurposes only and not as limiting the scope of my invention. Otherspecific forms of cocking lever and firing mechanism may be used ifdesired.

The locking of the firearm against breaking until desired is effected bythe projecting of locking bolt 85' into notch 86 formed in the bottomportion of the shell chamber block 2. When it is desired to break thefirearm, this locking bolt is withdrawn from" notch 86' by pushingsidewise away from the eye upon the locking lever 81 of Figs. 1 and 2.The forward end of this lever is flattened and rotatably secured byscrew 88 within an arcuate socket in the top face of the breech block 33(see Fig. 2). As seen in Fig. 10 the righthand side of the flattenedforward end of locking lever 8'I directly opposite the axis of rotationthereof is formed with a recess 88, into which is inserted the upper end89 of the locking bolt operating lever 90, which is pivoted at 9I in asuitable slot in the breech block 33 as seen in Fig. 2. The bottom end92 of lever 90 is positioned in a notch 93. The locking bolt 85 isslotted at 94 to provide two spaced apart arms 95, 96 which, as seen inFig. 9 and Fig. 10, straddle the cooking lever 84, and as seen in Fig.11, straddle the upstanding flanges HT, 98, which extend along the sidesof the trigger opening in the lower tang. Mounted in an opening 99 inthe side plate I4 of frame I3 is a pin I00 which is continually urgedinwardly by spring IOI secured at one end by a screw I02 in a slot thatslopes inwardly toward hole 99. When locking bolt 85 is withdrawn fromsocket or recess 86 by swinging sidewise on the rear end of lockinglever 81, pin I00 jumps into place in front of bolt 85 and holds itrearwardly so as to clear the rear bottom edge of the shell chamberblock when the firearm is being closed. In order to withdraw pin I00from in front of locking bolt 85 so as to permit it to be pushed intosocket 86 by swinging sidewise toward the eye the rear end of lever 91,the upper edge of the inner end of pin I00 is chamfered or beveled atI03 so that the bottom of the adjacent edge I04 of the shell chamberblock will push it outwardly away from in front of locking bolt 85 topermit the latter to be pushed into the socket 86 when they register.

The trigger guard I 05 is provided for the usual purpose of protectingthe triggers. The forward end of the wood plates that close the openingthat houses the breech mechanism are beveled at their forward ends andfit under the undercut portion I06 on each side as shown in Fig. 10.

The opening IU'I in the fore-end 5 receives the lug I08 on theunderneath side of the lower barrel when the fore-end is snapped intofinal position. The fore-end will be provided with a wood or otherattractive covering for decorative as well as hand grip purposes, asindicated in dotted lines at I09 in Fig. 6. As is understood theshoulder butt of the firearm will be provided to the rear of the breechbut has been omitted in the drawings for convenience.

Having now described my invention,

I claim:-

1. In a firearm, of the over-under type, a breech portion, a barrelportion swingably mounted with relation to the breech portion forbreaking purposes, a cocking pin longitudinally slidable in the lowerportion of the breech portion, mechanism for longitudinally moving thecooking pin during breaking, said barrel portion having a shell chamberblock at its rear end, saldshell chamber block having a longitudinallyextending groove in its bottom portion, which groove moves into positionover the cooking pin when the firearm is closed.

2'. In a firearm of the over-under type, a breech portion, a barrelportion swingably mounted with relation to the breech portion forbreaking purposes, a cooking pin longitudinally slidable in the breechportion, mechanism for longitudinally moving the cooking pin duringbreaking, a shell chamber block on the rear end of the barrel portion,the bottom faceof the shell chamber block having a centrally positionedlongitudinally extending groove which receives the cooking pin when thefirearm is closed, and in which the cocking pin is also slidable.

3. In a firearm of the over-under type, a breech portion, a barrelportion swingably mounted with relation to the breech portion forbreaking purposes, a cocking pin longitudinally slidable in the lowerportion of the breechportion, mechanism for longitudinally moving thecooking pin during breaking, a shell chamber block at the rear end ofthe barrel portion, the bottom face of the shell chamber block beingformed with a centrally positioned longitudinally extending groovewithin which the cocking pin slidably seats when the firearm is closed,and firing mechanism in the breech portion, which firing mechanism ismoved to cocked position by the longitudinal movement of the cooking pinwhen the firearm is being broken. I

4. In a firearm of the over-under type, a breech portion, a barrelportion swingably' mounted with" relation to the breech portion forbreaking purposes, a cocking pin longitudinally slidable in the lowerportion ofthe breech portion, a fore-end on the barrel portion, a camportion on the foreend, said cam portion having a cam face engaging oneend of the 'cockingpin and moving said pin longitudinally when thebarrel portion is swung to open position, a pivoted cocking lever, apair of longitudinally slidable firing pins, a triggeroperated sear foreach firing pin 'for holding the same in retractedposition, a triggerfor each sear for releasing the same, longitudinal movement of saidcocking pin during swinging of the barrel to open position moving thefiring pins to retracted position through the medium of thecockinglever, the fulcrum of the cocking lever being below the bottom line ofthe firearm when the latter is held in horizontal firing position, ashell chamber block at the rear end of the barrel portion and having alongitudinally extending groove in its bottom portion, which groovemoves into position over the cocking pin when the barrel portion isswung to closed position.

5. In a firearm of the over-under type, in combination a breech portion,a barrel portion swingably mounted with relation to the breech portionfor breaking purposes, a cooking pin longitudinally slidable in thelower portion of the breech portion, a cooking lever operated by saidcocking pin, a pair of longitudinally slidable firing pins movable tococked position by the said cocking lever, a locking bolt slidablymounted in the lower portion of the breech portion closely adjacent saidcocking pin, said locking bolt being formed to permit movement of saidcocking lever by the cocking pin without interference, and means formoving said locking bolt into looking position after the cooking pin hasmoved the cooking lever to cocked position.

6. In a firearm of the over-under type having a plurality of barrelsmounted one directly over the other, a breech portion, a barrel portionswingably mounted with relation to the breech portion for breakingpurposes, firing elements movably mounted in the breech portion, acocking pin longitudinally slidable in the lower portion of the breechportion, mechanism for longitudinally moving the cooking pin duringbreaking, and connections between the cocking pin and firing elementsfor moving the latter to cocked position through the breaking action,said connections including a cocking lever for moving said firingelements, the fulcrum of the cooking lever being below the bottom lineof the firearm.

'7. In a firearm of the over-under type having a plurality of barrelsmounted one directly over the other, a breech portion, a barrel portionswingably mounted with relation to the breech portion for breakingpurposes, firing elements movably mounted in the breech portion, acocking pin longitudinally slidable in the lower portion of the breechportion, mechanism for longitudinally moving the cooking pin duringbreaking, and connections between the cooking pin and firing elementsfor moving the latter to cocked po sition through the breaking action,said connections including a cocking lever for moving said firingelements, the fulcrum of the cooking lever being below the bottom lineof the firearm, a trigger guard, said cocking lever fulcrum being in thetrigger guard.

8. In a firearm of the over-under type, a breech portion, a barrelportion swingably mounted with relation to the breech portion forbreaking purposes, a firing element in said breech portion, a cockingpin mounted in the lower portion of the breech portion for longitudinalsliding movement therein, a fore-end removably mounted on the lower faceof the barrel portion to swing therewith, a cam mounted in the fore-endfor moving the cocking pin longitudinally through the breaking action, acocking lever adapted to be swung to cocked position by said cockingpin, the fulcrum of the cocking lever being positioned below the bottomline of the firearm.

9. In a breech-loading firearm of the overunder type, a breech portion,a barrel portion swingably mounted with relation to the breech portionfor breaking purposes, a pair of firing elements mounted for movementone above the other, springs for normally urging said firing elements tofiring position, a projection on each :of said firing elements, acooking lever engageable with said projections for moving the firingelements into cocked position, and a cocking pin for imparting movementto the cocking lever,

said cocking pin being longitudinally movable in the lower portion ofthe breech portion, and means for moving said cocking pin longitudinallyagainst the said cocking lever by swinging the barrel portion relativelyto the breech portion, the fulcrum of the cocking lever being positionedbelow the bottom line of the firearm when the latter is held inhorizontal firing position.

10. In a firearm, a breech member having a portion depending below thebottom thereof and having a recess therein, an over and under barrelportion swingably mounted in the breech member for breaking purposes,firing mechanism for the barrels of said barrel portion, a cocking leverfor said firing mechanism, said lever being pivoted at its lower end inand near the bottom of said recess and projecting upwardly therefrom,and means located below the barrel member while in normal firingposition and engageable with said cocking lever by movement of saidbarrel member to breaking position and in such manner as to impartpivotal movement to said cocking lever in one direction.

11. In a firearm, a breech member having a portion depending below thebottom thereof and provided with a recess therein, an over and underbarrel portion swingably mounted in the breech member for breakingpurposes, firing mechanism for both barrels of the barrel portion, anupwardly projected cocking lever for said firing mechanism, said leverbeing pivoted at its lower end inand near the bottom of said recess, acocking pin slidably mounted in the breech member at the bottom thereofand beneath the lowermost barrel while in normal firing position, saidpin being movable in a plane parallel with that of said barrel while insaid firing position, said pin being movable into said recess in suchmanner as to engage said cocking lever, and means actuated by swingingmovement of the barrel portion to breaking position for impartingslidable movement to said pin in such manner as to project it into saidrecess and in engagement with said cocking lever so as to move thelatter to cocking position.

12. In a firearm, a breech member having a bottom plate provided with adepending portion having a recess therein, an over and under barrelportion swingably mounted in the breech member for breaking purposes,firing mechanism for the barrels of the barrel portion, an upwardlyprojected cocking lever pivotally mounted at its lower end in and nearthe bottom of said recess, a cocking pin slidably mounted on said bottomplate and movable through said recess and into engagement with thecocking lever, and means actuated by swinging movement of said barrelportion to breaking position, for bringing said cocking pin intoengagement with said cocking lever in such manner as to move the latterin one direction.

OLE HORSRUD.

CERTIFICATE OF CORRECTION. 1 Patent No. 2,127,919. August 25, 1958.

OLE HORSRUD.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 3second column, line 1L claim 2, after "the" insert the wordslower'portion of the; and that the said Letters Patent'shouldbe readwith this correction therein that the same may conform to the recordofthe case in the Patent Office.

Signed and sealed this 11th day of October, A. D 1958.

Henry Van Arsdale Acting Commissioner of Patents.

CERTIFICATE OF CORRECTION. Patent No. 2,127,919. August 25, 19

OLE HORSRUD,

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 5,second oolumn, line 11;, claim 2, after "the" insert the wordslower'portion of the; and that the said Letters Patent'shouldbe readwith this correction therein that the same may conform to the record ofithe case in the Patent Office.

Signed and sealed this 11th day of October, A. Do 1958.,

Henry Van Arsdal e v Acting Commissioner of Patents.

